diff --git a/pyproject.toml b/pyproject.toml
deleted file mode 100644
--- a/pyproject.toml
+++ /dev/null
@@ -1,3 +0,0 @@
-[build-system]
-requires = ["setuptools", "wheel"]
-build-backend = "setuptools.build_meta"
diff --git a/tests/test-check-code.t b/tests/test-check-code.t
--- a/tests/test-check-code.t
+++ b/tests/test-check-code.t
@@ -70,7 +70,6 @@
   hg
   hgeditor
   hgweb.cgi
-  pyproject.toml
   rustfmt.toml
   setup.py